Hope all is well. I saw your post on Friday about Vonage and just wanted to offer more information about the $3.99/month plan. Vonage has had this package for several years now (at least three, possibly four years), so this is by no means a new plan, and it’s used exclusively as a short-term retention promotion.
I discovered this interesting Asterisk termination post saved as "unpublished" dated 6-20-2005. I must have put it aside to work on some other projects. I thought I would publish it now since it still has some pertinent thoughts. Reading my article, I couldn't help but notice that it is two years later and there still isn't a sizable intra-enterprise VoIP peering network that I am aware of (with one exception - VPF).
I noticed some interesting Google Adsense ads on my blog. It piqued my interest, but I'm not supposed to click on my own ads. Fortunately, I noticed it elsewhere and clicked through. The website shows two traditional PBXs complaining how they are going to be replaced by voice over IP.